October

October 1 – A Czech worker, František Pavlík (1885–1905), was bayoneted to death during a demonstration for a Czech university in Brno. This event was the motivation for a piano sonata, 1. X. 1905, by composer Leoš Janáček, which premiered on 27 January 1906.

October 2 – HMS Dreadnought is laid down in the United Kingdom, revolutionizing battleship design and triggering a naval arms race.